26 Feb
2007
26 Feb
'07
3:37 a.m.
Simply use two chips of the same model, connect all of their pins except ID[0], wire ID[0] of each of the chips to one side of an intermediate switch which is connected to Vcc and GND on the other side.
You'll need a pull up/down resistor on that line probably.
- a way to drive RST# to GND without shorting the board
That's what diodes are for ;-)
- serious soldering skills to solder two chips to each other
Two sockets, some wire / PCB. Soldering them directly together would be very fragile.
Sounds nice? Surely there's a catch. It can't be that easy, right? Tell me!
Well you've got the basic idea right, there are some details to get right though, as always. Things can be slightly different per kind of chip and per board, too, be aware of that.
Segher